<template>
  <view class="uni-calendar" @mouseleave="leaveCale">
    <view v-if="!insert&&show" :class="{'uni-calendar--mask-show':aniMaskShow}" class="uni-calendar__mask"
          @click="clean"></view>
    <view v-if="insert || show" :class="{'uni-calendar--fixed':!insert,'uni-calendar--ani-show':aniMaskShow}"
          class="uni-calendar__content">

      <view class="uni-calendar__header">
        <view v-if="left" class="uni-calendar__header-btn-box" @click.stop="pre">
          <view class="uni-calendar__header-btn uni-calendar--left"></view>
        </view>
        <picker :value="date" fields="month" mode="date" @change="bindDateChange">
          <text
              class="uni-calendar__header-text">{{ (nowDate.year || '') + '年' + (nowDate.month || '') + '月' }}
          </text>
        </picker>
        <view v-if="right" class="uni-calendar__header-btn-box" @click.stop="next">
          <view class="uni-calendar__header-btn uni-calendar--right"></view>
        </view>
        <!-- <text class="uni-calendar__backtoday" @click="backtoday">回到今天</text> -->

      </view>
      <view class="uni-calendar__box">
        <view v-if="showMonth" class="uni-calendar__box-bg">
          <text class="uni-calendar__box-bg-text">{{ nowDate.month }}</text>
        </view>
        <view class="uni-calendar__weeks">
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">日</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">一</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">二</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">三</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">四</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">五</text>
          </view>
          <view class="uni-calendar__weeks-day">
            <text class="uni-calendar__weeks-day-text">六</text>
          </view>
        </view>
        <view v-for="(item,weekIndex) in weeks" :key="weekIndex" class="uni-calendar__weeks">
          <view v-for="(weeks,weeksIndex) in item" :key="weeksIndex" class="uni-calendar__weeks-item">
            <calendar-item :calendar="calendar" :checkHover="range" :lunar="lunar"
                           :selected="selected" :weeks="weeks" class="uni-calendar-item--hook" @change="choiceDate"
                           @handleMouse="handleMouse">
            </calendar-item>
          </view>
        </view>
      </view>
      <view v-if="!insert && !range && typeHasTime" class="uni-date-changed uni-calendar--fixed-top"
            style="padding: 0 40px;">
        <text class="uni-date-changed--time-date">{{ tempSingleDate ? tempSingleDate : '选择日期' }}</text>
        <time-picker v-model="time" :border="false" :disabled="!tempSingleDate" :end="reactEndTime"
                     :start="reactStartTime"
                     class="time-picker-style" type="time">
        </time-picker>
      </view>

      <view v-if="!insert && range && typeHasTime" class="uni-date-changed uni-calendar--fixed-top">
        <view class="uni-date-changed--time-start">
          <text class="uni-date-changed--time-date">{{ tempRange.before ? tempRange.before : '开始日期' }}</text>
          <time-picker v-model="timeRange.startTime" :border="false" :disabled="!tempRange.before"
                       :start="reactStartTime" class="time-picker-style" type="time">
          </time-picker>
        </view>
        <uni-icons color="#999" style="line-height: 50px;" type="arrowthinright"></uni-icons>
        <view class="uni-date-changed--time-end">
          <text class="uni-date-changed--time-date">{{ tempRange.after ? tempRange.after : '结束日期' }}</text>
          <time-picker v-model="timeRange.endTime" :border="false" :disabled="!tempRange.after" :end="reactEndTime"
                       class="time-picker-style" type="time">
          </time-picker>
        </view>
      </view>

      <view v-if="!insert" class="uni-date-changed uni-calendar__header" @click="confirm">
        <!-- 				<view class="uni-calendar__header-btn-box" @click="close">
          <text class="uni-calendar__header-text uni-calendar--fixed-width">取消</text>
        </view> -->
        <view class="uni-calendar__header-btn-box">
          <text class="uni-calendar__button-text uni-calendar--fixed-width">确定</text>
        </view>
      </view>
    </view>
  </view>
</template>

<script>
import Calendar from './util.js';
import calendarItem from './calendar-item.vue'
import timePicker from './time-picker.vue'

/**
 * Calendar 日历
 * @description 日历组件可以查看日期，选择任意范围内的日期，打点操作。常用场景如：酒店日期预订、火车机票选择购买日期、上下班打卡等
 * @tutorial https://ext.dcloud.net.cn/plugin?id=56
 * @property {String} date 自定义当前时间，默认为今天
 * @property {Boolean} lunar 显示农历
 * @property {String} startDate 日期选择范围-开始日期
 * @property {String} endDate 日期选择范围-结束日期
 * @property {Boolean} range 范围选择
 * @property {Boolean} insert = [true|false] 插入模式,默认为false
 *  @value true 弹窗模式
 *  @value false 插入模式
 * @property {Boolean} clearDate = [true|false] 弹窗模式是否清空上次选择内容
 * @property {Array} selected 打点，期待格式[{date: '2019-06-27', info: '签到', data: { custom: '自定义信息', name: '自定义消息头',xxx:xxx... }}]
 * @property {Boolean} showMonth 是否选择月份为背景
 * @event {Function} change 日期改变，`insert :ture` 时生效
 * @event {Function} confirm 确认选择`insert :false` 时生效
 * @event {Function} monthSwitch 切换月份时触发
 * @example <uni-calendar :insert="true":lunar="true" :start-date="'2019-3-2'":end-date="'2019-5-20'"@change="change" />
 */
export default {
  components: {
    calendarItem,
    timePicker
  },
  props: {
    date: {
      type: String,
      default: ''
    },
    defTime: {
      type: [String, Object],
      default: ''
    },
    selectableTimes: {
      type: [Object],
      default() {
        return {}
      }
    },
    selected: {
      type: Array,
      default() {
        return []
      }
    },
    lunar: {
      type: Boolean,
      default: false
    },
    startDate: {
      type: String,
      default: ''
    },
    endDate: {
      type: String,
      default: ''
    },
    range: {
      type: Boolean,
      default: false
    },
    typeHasTime: {
      type: Boolean,
      default: false
    },
    insert: {
      type: Boolean,
      default: true
    },
    showMonth: {
      type: Boolean,
      default: true
    },
    clearDate: {
      type: Boolean,
      default: true
    },
    left: {
      type: Boolean,
      default: true
    },
    right: {
      type: Boolean,
      default: true
    },
    checkHover: {
      type: Boolean,
      default: true
    },
    pleStatus: {
      type: Object,
      default() {
        return {
          before: '',
          after: '',
          data: [],
          fulldate: ''
        }
      }
    }
  },
  data() {
    return {
      show: false,
      weeks: [],
      calendar: {},
      nowDate: '',
      aniMaskShow: false,
      firstEnter: true,
      time: this.defTime ? this.defTime : '',
      timeRange: {
        startTime: this.defTime.start ? this.defTime.start : '',
        endTime: this.defTime.end ? this.defTime.end : ''
      },
      tempSingleDate: this.date,
      tempRange: {
        before: '',
        after: ''
      }
    }
  },
  watch: {
    date(newVal, oldVal) {
      // this.cale.setDate(newVal)
      this.init(newVal)
    },
    startDate(val) {
      this.cale.resetSatrtDate(val)
    },
    endDate(val) {
      this.cale.resetEndDate(val)
    },
    selected(newVal) {
      this.cale.setSelectInfo(this.nowDate.fullDate, newVal)
      this.weeks = this.cale.weeks
    },
    // tempRange: {
    // 	immediate: true,
    // 	handler(newVal, oldVal) {debugger
    // 		if (!oldVal) return
    // 		if (!newVal.before) this.timeRange.startTime = ''
    // 		if (!newVal.after) this.timeRange.endTime = ''
    // 	}
    // },
    pleStatus: {
      immediate: true,
      handler(newVal, oldVal) {
        const {
          before,
          after,
          fulldate,
          which
        } = newVal
        this.tempRange.before = before
        this.tempRange.after = after
        setTimeout(() => {
          if (fulldate) {
            this.cale.setHoverMultiple(fulldate)
            if (before && after) {
              this.cale.lastHover = true
              if (this.rangeWithinMonth(after, before)) return
              this.setDate(before)
            }
            if (!before && !after) {
              this.cale.setMultiple(fulldate)
              this.setDate(this.nowDate.fullDate)
              this.calendar.fullDate = ''
              this.cale.lastHover = false
            }
          } else {
            this.cale.setDefaultMultiple(before, after)
            if (which === 'left') {
              this.setDate(before)
            } else {
              this.setDate(after)
            }
            this.cale.lastHover = true
          }
        }, 16)
      }
    }
  },
  computed: {
    reactStartTime() {
      const activeDate = this.range ? this.tempRange.before : this.calendar.fullDate
      const res = activeDate === this.startDate ? this.selectableTimes.start : ''
      return res
    },
    reactEndTime() {
      const activeDate = this.range ? this.tempRange.after : this.calendar.fullDate
      const res = activeDate === this.endDate ? this.selectableTimes.end : ''
      return res
    }
  },
  created() {
    // 获取日历方法实例
    this.cale = new Calendar({
      // date: new Date(),
      selected: this.selected,
      startDate: this.startDate,
      endDate: this.endDate,
      range: this.range,
      // multipleStatus: this.pleStatus
    })
    // 选中某一天
    // this.cale.setDate(this.date)

    this.init(this.date)
    // this.setDay
  },
  methods: {
    leaveCale() {
      this.firstEnter = true
    },
    handleMouse(weeks) {
      if (weeks.disable) return
      if (this.cale.lastHover) return
      let {
        before,
        after
      } = this.cale.multipleStatus
      if (!before) return
      this.calendar = weeks
      // 设置范围选
      this.cale.setHoverMultiple(this.calendar.fullDate)
      this.weeks = this.cale.weeks
      // hover时，进入一个日历，更新另一个
      if (this.firstEnter) {
        this.$emit('firstEnterCale', this.cale.multipleStatus)
        this.firstEnter = false
      }
    },
    rangeWithinMonth(A, B) {
      const [yearA, monthA] = A.split('-')
      const [yearB, monthB] = B.split('-')
      return yearA === yearB && monthA === monthB
    },

    // 取消穿透
    clean() {
      this.close()
    },

    bindDateChange(e) {
      const value = e.detail.value + '-1'
      console.log(this.cale.getDate(value));
      this.init(value)
    },
    /**
     * 初始化日期显示
     * @param {Object} date
     */
    init(date) {

      this.cale.setDate(date)
      this.weeks = this.cale.weeks
      this.nowDate = this.calendar = this.cale.getInfo(date)
    },
    /**
     * 打开日历弹窗
     */
    open() {
      // 弹窗模式并且清理数据
      if (this.clearDate && !this.insert) {
        this.cale.cleanMultipleStatus()
        // this.cale.setDate(this.date)
        this.init(this.date)
      }
      this.show = true
      this.$nextTick(() => {
        setTimeout(() => {
          this.aniMaskShow = true
        }, 50)
      })
    },
    /**
     * 关闭日历弹窗
     */
    close() {
      this.aniMaskShow = false
      this.$nextTick(() => {
        setTimeout(() => {
          this.show = false
          this.$emit('close')
        }, 300)
      })
    },
    /**
     * 确认按钮
     */
    confirm() {
      this.setEmit('confirm')
      this.close()
    },
    /**
     * 变化触发
     */
    change() {
      if (!this.insert) return
      this.setEmit('change')
    },
    /**
     * 选择月份触发
     */
    monthSwitch() {
      let {
        year,
        month
      } = this.nowDate
      this.$emit('monthSwitch', {
        year,
        month: Number(month)
      })
    },
    /**
     * 派发事件
     * @param {Object} name
     */
    setEmit(name) {
      let {
        year,
        month,
        date,
        fullDate,
        lunar,
        extraInfo
      } = this.calendar
      this.$emit(name, {
        range: this.cale.multipleStatus,
        year,
        month,
        date,
        time: this.time,
        timeRange: this.timeRange,
        fulldate: fullDate,
        lunar,
        extraInfo: extraInfo || {}
      })
    },
    /**
     * 选择天触发
     * @param {Object} weeks
     */
    choiceDate(weeks) {
      if (weeks.disable) return
      this.calendar = weeks
      // 设置多选
      this.cale.setMultiple(this.calendar.fullDate, true)
      this.weeks = this.cale.weeks
      this.tempSingleDate = this.calendar.fullDate
      this.tempRange.before = this.cale.multipleStatus.before
      this.tempRange.after = this.cale.multipleStatus.after
      this.change()
    },
    /**
     * 回到今天
     */
    backtoday() {
      console.log(this.cale.getDate(new Date()).fullDate);
      let date = this.cale.getDate(new Date()).fullDate
      // this.cale.setDate(date)
      this.init(date)
      this.change()
    },
    /**
     * 比较时间大小
     */
    dateCompare(startDate, endDate) {
      // 计算截止时间
      startDate = new Date(startDate.replace('-', '/').replace('-', '/'))
      // 计算详细项的截止时间
      endDate = new Date(endDate.replace('-', '/').replace('-', '/'))
      if (startDate <= endDate) {
        return true
      } else {
        return false
      }
    },
    /**
     * 上个月
     */
    pre() {
      const preDate = this.cale.getDate(this.nowDate.fullDate, -1, 'month').fullDate
      this.setDate(preDate)
      this.monthSwitch()

    },
    /**
     * 下个月
     */
    next() {
      const nextDate = this.cale.getDate(this.nowDate.fullDate, +1, 'month').fullDate
      this.setDate(nextDate)
      this.monthSwitch()
    },
    /**
     * 设置日期
     * @param {Object} date
     */
    setDate(date) {
      this.cale.setDate(date)
      this.weeks = this.cale.weeks
      this.nowDate = this.cale.getInfo(date)
    }
  }
}
</script>

<style lang="scss" scoped>
.uni-calendar {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
}

.uni-calendar__mask {
  position: fixed;
  bottom: 0;
  top: 0;
  left: 0;
  right: 0;
  background-color: $uni-bg-color-mask;
  transition-property: opacity;
  transition-duration: 0.3s;
  opacity: 0;
  /* #ifndef APP-NVUE */
  z-index: 99;
  /* #endif */
}

.uni-calendar--mask-show {
  opacity: 1
}

.uni-calendar--fixed {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  transition-property: transform;
  transition-duration: 0.3s;
  transform: translateY(460px);
  /* #ifndef APP-NVUE */
  z-index: 99;
  /* #endif */
}

.uni-calendar--ani-show {
  transform: translateY(0);
}

.uni-calendar__content {
  background-color: #fff;
}

.uni-calendar__header {
  position: relative;
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
  justify-content: center;
  align-items: center;
  height: 50px;
  // border-bottom-color: $uni-border-color;
  // border-bottom-style: solid;
  // border-bottom-width: 1px;
}

.uni-calendar--fixed-top {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
  justify-content: space-between;
  border-top-color: $uni-border-color;
  border-top-style: solid;
  border-top-width: 1px;
}

.uni-calendar--fixed-width {
  width: 50px;
  // padding: 0 15px;
}

.uni-calendar__backtoday {
  position: absolute;
  right: 0;
  top: 25 rpx;
  padding: 0 5px;
  padding-left: 10px;
  height: 25px;
  line-height: 25px;
  font-size: 12px;
  border-top-left-radius: 25px;
  border-bottom-left-radius: 25px;
  color: $uni-text-color;
  background-color: $uni-bg-color-hover;
}

.uni-calendar__header-text {
  text-align: center;
  width: 100px;
  font-size: $uni-font-size-base;
  color: $uni-text-color;
}

.uni-calendar__button-text {
  text-align: center;
  width: 100px;
  font-size: $uni-font-size-base;
  color: #007aff;
  letter-spacing: 3px;
}

.uni-calendar__header-btn-box {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
}

.uni-calendar__header-btn {
  width: 10px;
  height: 10px;
  border-left-color: $uni-text-color-placeholder;
  border-left-style: solid;
  border-left-width: 2px;
  border-top-color: $uni-color-subtitle;
  border-top-style: solid;
  border-top-width: 2px;
}

.uni-calendar--left {
  transform: rotate(-45deg);
}

.uni-calendar--right {
  transform: rotate(135deg);
}


.uni-calendar__weeks {
  position: relative;
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: row;
}

.uni-calendar__weeks-item {
  flex: 1;
}

.uni-calendar__weeks-day {
  flex: 1;
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 45px;
  border-bottom-color: #F5F5F5;
  border-bottom-style: solid;
  border-bottom-width: 1px;
}

.uni-calendar__weeks-day-text {
  font-size: 14px;
}

.uni-calendar__box {
  position: relative;
}

.uni-calendar__box-bg {
  /* #ifndef APP-NVUE */
  display: flex;
  /* #endif */
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.uni-calendar__box-bg-text {
  font-size: 200px;
  font-weight: bold;
  color: $uni-text-color-grey;
  opacity: 0.1;
  text-align: center;
  /* #ifndef APP-NVUE */
  line-height: 1;
  /* #endif */
}

.uni-date-changed {
  padding: 0 10px;
  // line-height: 50px;
  text-align: center;
  color: #333;
  border-top-color: $uni-border-color;
  border-top-style: solid;
  border-top-width: 1px;
}


.uni-date-changed--time text {
  // padding: 0 20px;
  // height: 50px;
  line-height: 50px;
}

.uni-date-changed {
  flex: 1;
}

.uni-date-changed--time {
  display: flex;
  flex: 1;
}

.uni-date-changed--time-start {
  display: flex;
  justify-content: right;
  align-items: center;
  // flex: 1;
}

.uni-date-changed--time-end {
  display: flex;
  justify-content: left;
  align-items: center;
  // flex: 1;
}

.uni-date-changed--time-date {
  color: #999;
  line-height: 50px;
  // opacity: 0.6;
}

.time-picker-style {
  width: 62px;
  display: flex;
  justify-content: center;
  align-items: center
}

.mr-10 {
  margin-right: 10px;
}
</style>
